In the dark days of winter it is comforting to feel the warmth of crackling logs in an open fireplace or a wood burner.
What could be friendlier to the planet than using a renewable resource such as wood?
Unfortunately, the fumes from wood fires carry microscopic particles of soot.
Particles known as PM2.5 are possibly one of the most dangerous air pollution health hazards.
Even though a minority of UK households use wood fires 7.5 per cent of the population the pollution
from these particles are estimated to be more than double that from UK's diesel cars, buses and lorries.
Even a single log burning stove emits more PM2.5 particles than 1,000 petrol cars each year.
Previous studies have suggested that wood smoke can enter neighbouring homes, even if wood is burnt in
modern stoves rather than open fires. Simply starting the fire, stoking it and reloading the burner can give off sooty particles.
The department for Environment, Food and Rural Affairs (Defra) issues warnings of high air pollution
from noxious gases, yet only issues "notifications" of high particle levels.
Defra's recent annual report on air pollution admitted that the UK was in breach of international limits for pollutants.
It also revealed that particle pollution is increasing, with levels of most other air pollutants are falling.
The health risks from PM2.5 are especially worrying because these particles are so small that they can easily
be breathed deep into the lungs, which can lead to health issues such as asthma, lung cancer and cardiovascular diseases.
In addition to health problems, these particles trap heat in the atmosphere and contribute to climate change.
It is a myth that wood burning is environmentally friendly. There needs to be a public awareness campaign of the
dangers from wood burning, in the same way that the hazards of diesel car pollution have received a great deal of publicity.
http://www.health.ny.gov/environmental/indoors/air/pmq_a.htm